HP Forums

Full Version: HP38E wrong LED segments
You're currently viewing a stripped down version of our content. View the full version with proper formatting.
Hello repair doctors
I have a 38E wich is very clean inside and looks like new. But on 2 3 4 and 7 is an additional segment bright.
Have any one a idea what can be defect?

[attachment=5282][attachment=5283][attachment=5284][attachment=5285][attachment=5286]

Thanx for your help
(10-26-2017 07:03 PM)Hans-Peter Wrote: [ -> ]Have any one a idea what can be defect?

I have an HP-21 display with a similar defect on some segments. I could be a degradation of the GaAS semiconductor substrate. No idea for a repair. You need a replacement from another calculator.

Bernhard
Reference URL's